Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Goodwill and Other Intangible Assets (Schedule of Other Intangible Assets) (Details)

v3.4.0.3
Goodwill and Other Intangible Assets (Schedule of Other Intangible Assets) (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Gross Carrying Amount $ 793,579 $ 792,841
Accumulated Amortization (262,041) (247,266)
Accumulated Impairment Loss (293,107) (293,107)
Net Book Value 238,431 252,468
Developed technology [Member]    
Gross Carrying Amount 509,673 509,827
Accumulated Amortization (168,124) (157,862)
Accumulated Impairment Loss (203,170) (203,170)
Net Book Value 138,379 148,795
Patents [Member]    
Gross Carrying Amount 18,232 17,785
Accumulated Amortization $ (10,454) $ (10,008)
Accumulated Impairment Loss
Net Book Value $ 7,778 $ 7,777
Trademarks and trade names [Member]    
Gross Carrying Amount 60,182 60,141
Accumulated Amortization (15,044) (14,463)
Accumulated Impairment Loss (27,698) (27,698)
Net Book Value 17,440 17,980
Customer relationships [Member]    
Gross Carrying Amount 150,915 150,677
Accumulated Amortization (44,961) (41,708)
Accumulated Impairment Loss (34,720) (34,720)
Net Book Value 71,234 74,249
Non-compete agreements [Member]    
Gross Carrying Amount 10,843 10,843
Accumulated Amortization (5,874) (5,874)
Accumulated Impairment Loss $ (4,969) $ (4,969)
Net Book Value
Capitalized software development costs [Member]    
Gross Carrying Amount $ 21,555 $ 21,389
Accumulated Amortization (17,584) (17,351)
Accumulated Impairment Loss (1,379) (1,379)
Net Book Value 2,592 2,659
In process research and development [Member]    
Gross Carrying Amount $ 22,179 $ 22,179
Accumulated Amortization
Accumulated Impairment Loss $ (21,171) $ (21,171)
Net Book Value $ 1,008 $ 1,008